Front Panel Controls And Indicators; Back Panel Controls, Connectors And Indicators; Setup - Crown MA-5000i Operation Manual

2 Setup

1.2 Front Panel Controls and Indica- c. Output Signal Presence indicator: Green
tors LED above master output volume control
illuminates when any input signal exceeds
A. input Signal Presence/clip indica-
–40 dBu.
tors: Green LED, one above each channel's
volume control, illuminates when input d. Output Signal clip indicator: Red LED
signal exceeds –40 dBu, or flashes brightly above master output volume control flashes
at threshold of audible distortion.
brightly at threshold of audible distortion.
B. Master Output Volume control: Detented e. Power indicator: Blue LED indicates
potentiometer with knob. power on.
A
F
Figure 1.1 Front Panel Controls and Indicators
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Commercial Audio Series Mixer-Amplifiers
F. input Volume controls: One per input,
detented potentiometers with knobs. Four
controls in 160MA; three controls in 135MA.
g. Tone controls: Bass and Treble non-
detented recessed potentiometers under
master output volume control. Bass ±10 dB
at 100 Hz, Treble ±10 dB at 10 kHz.
H. Power Switch: Pushbutton on-off switch.
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Operation Manual
Commercial Audio Series Mixer-Amplifiers
2 Setup
1.3 Back Panel Controls, Connectors 3. On: CH1 priority contact closure mutes
and Indicators other channels.
4. On: CH1 VOX mutes other channels by
A. Ac Power inlet: Detachable IEC accepts
sensing signal through Input 1.
US or Euro style power cords.
5. On: Routes CH1 to MOH output.
B. Amplifier Output connector: 4-position
6. On: Routes CH2 to MOH output.
terminal barrier block with COM (Common),
7. On: Routes CH3 to MOH output.
8 ohms, 70V and 100V terminals. Accepts
8. On: 15V phantom power.
up to 10 AWG terminal forks. Clear non-
d: input connectors 2-4 (160MA) or 2-3
touch cover included.
(135MA)
c. Amp configuration diP Switch: DIP
Unbalanced line-level RCA-type connectors,
switch selection for multiple functions.
summed to mono.
1. On: Sets CH1 to Mic Input. Off: Sets CH1
e. Preamp Line Out connector: 3-pin bal-
to Line Input.
anced Phoenix-type for connection to exter-
2. On: Sets CH1 to Normal mode (no prior-
nal amplifiers. Level independent of master
ity).
volume control.
A
B
Figure 1.2 Back Panel Controls, Connectors and Indicators
Operation Manual
F. MOH Level control: Trim pot adjusts level
for Music-On-Hold output from Telephone
(MOH) Output Connector.
g. Telephone (MOH) Output connector:
4-terminal Phoenix connector (2 terminals
for 1W output to 8-ohm speaker, 2 terminals
for 600-ohm output to PBX music-on-hold
port).
H. VOX Threshold: Trim pot controls how
loud the voice on CH1 must be before
muting other channels. Can be set for no
muting.
i. input connector 1: 5-terminal Phoenix
connector. 3 terminals for balanced signal, 2
terminals for priority contact closure, which
mutes other channels when DIP switch 3
is on.
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